AIIMS 2018 Botany Lac Operon MCQ Question

In the Lac operon, the i gene encodes the repressor protein, which inhibits the transcription of downstream genes when lactose is absent. The z gene encodes β-galactosidase, which breaks down lactose into glucose and galactose, while the y gene encodes permease, facilitating lactose entry into the cell. The a gene encodes transacetylase, which is involved in the metabolism of lactose. Since options B, C, and D are marked as N/A, they do not provide any relevant information or alternatives regarding the components of the Lac operon.